25140212 has 12 divisors (see below), whose sum is σ = 46583460. Its totient is φ = 11830656.

The previous prime is 25140197. The next prime is 25140217. The reversal of 25140212 is 21204152.

It can be written as a sum of positive squares in 2 ways, for example, as 19589476 + 5550736 = 4426^2 + 2356^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25140217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184787 + ... + 184922.

It is an arithmetic number, because the mean of its divisors is an integer number (3881955).

Almost surely, 2^25140212 is an apocalyptic number.

It is an amenable number.

25140212 is a deficient number, since it is larger than the sum of its proper divisors (21443248).

25140212 is a wasteful number, since it uses less digits than its factorization.

25140212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369730 (or 369728 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 25140212 is about 5014.0015955323. The cubic root of 25140212 is about 292.9473982147.

Adding to 25140212 its reverse (21204152), we get a palindrome (46344364).

It can be divided in two parts, 25140 and 212, that added together give a palindrome (25352).

The spelling of 25140212 in words is "twenty-five million, one hundred forty thousand, two hundred twelve".